Process of producing pulp



Patented Aug. 4', 1931 UNITED STATES.

PATENT OFFICE .'r'osn m'rmz Es'rarn, or wana, cuna l .raoonss or raonucmo roar No Drawing. Application led April 5, 192B, Serial No. 287,806, and in Cuba January 18, 1928.

This invention relates to the use of plants heretofore neverused for any industrial purpose and` its object is to provide a new process of producing pul from said plants.

In' nearly all the climates of the-world, and

very specially, in the verges of brooks, rivers,

4 contains some moisture acteristics such as smoot har lr, with knots in their stems ythat.

vso

everglades, etc.,

proof bar form hollow internodes, ,brittle fibers, etc.

In the components of the reeds and the carrizo, there are, in its formation, celluloses in fibrous and ligneous condition mucilages which are soluble an insoluble, etc., and precisely, the cellulose extracted by means of my invention is specially' adapted for the manufacture of paper,

the purpose some chemical 'and thermochemical components and special methods, which, when applied to the above named plants,

reduce the celluloseor ulp for the manuacture of all the artic es mentioned and others which it would be obvious to enumerate here, all of which-is bound to produce a real revolution in the textile and paper industries, due tothe extremely low price at which the cellulose or pulp aforesaid may be sold due to the insigmcant cost of the raw matter, because spreading the l:reeds or the carrito ence (in the places where there is none? it is not necessary to spread. it again, but une to its nature and easy reproduction,

the more it is cut, the stronger and more abundantly it sprouts, without the need of an subsequent cultivation. f

ille process for producing pulpfrom the reed or the Carrizo plant,is as follows. The reed or the Carrizo plant stalks are crushed in order to' extract the )nice which after ermenting is converted into alcohol,

ms and cardboard, artificial silk, gun cotton, etc., employing for and once crushed in small pieces to make 'it easier to handle, it is introduced into a boiler or special rece tacle, with water at the rate of eight and .hal parts of water per one part of bagasse in weight, to which is added 8 to 9 rcent of caustic soda, alone or with some small vquantity -of, sodlumsulphite, if the cellulose is to be employed in the manufacture of very fine paper or artificial silk. With this lye,` the reed or the carrizo .bagasse is boiled under a pressure of three to five atmospheres, during a period ohalf an hour to two hours, according to the kind of product to be made of the ulp, because on this depends the ressure an duration of the boiling period. he steam produced in the boiler is allowed to escape,A and-the lye is ex# tracted, which, in being treated with hydrochloric acid gases, leave the gums contained by the bagasse separated from the pulp; these dustries, is nothing more than sodium chloride, which serves for reparing the new lye for the lnew manu acturing process, thus greatly diminishin the cost and quantity of the soda, whic is not needed then in the same pro ortion reviously expressed.

he cellu ose` paste or pulp remaining, is passed through a mill, in order to com letely reak up the fibre and reduce it to t e size desired, according to the industry in which -it is desired to. use it, and then a perfect wash and sifting'are carried out in order to* take 0E the long fibres or the heavythreads which might have been left, which are passed again to the mill for further reduction.

The cellulose, paste or pulp remaining is alread in a condition that permits its immediete introduction to a paper mill, tor in.

stance', where it' may be entirely bieaehed with a solution of sodium hypochlorite of 3% and at a temperature of 40 0. ror by .means of the electrol tic chlorine, it the lyes resulting from the l oiling are regenerated electrelytically upon taking'them oid the receptacle Where the softeningof the reed or the car-rizo bagasse took place.

I'ill'ie cellulose thus extracted, high grade of purity may be already emdue its 1d' gums being applicable to many inand leaves the clarified liquid which l2 f y 1,817,548

ployed for the manufacture of gun cotton or artificial silk or any other use where a cellui lose, pulp or paste ofthe most pure and clean I condition is required. 5 Having thus described my invention, what I claim is the followin i j 1. A process for producing pulp from the reed (Uaa bra/va) and the carrizol plants comprising crushing the stalks of said plants, boiling the resultant b with water in the proportion of from 8% to 10 parts of water to 1 part of ba asse by weight containing soda caustic an sodium sulphite in a receptacle under pressure treat' ing the pulp with hydrochloric acid gas, separating from the pulp the gums contained 1n the bagasse, separating the liquor from the pulp, and crushing the separated pulp. 2. A process for producing pulp from the 2 reed (Oaa brava) and the carrizo plants comprising, `crushing the stalks of said plants, boilin the resultant -ba asse with water containing soda caustic an sodium siilphitein a receptacle under pressure, treating the pulp with hydrochloric acid gas, separating from the pulp the gums contained in the bagasse, separating the liquor from the pulp, crushing the separated pulp, washing and sifting it and crushing again the rev sulting fibers. Y

' In witness whereof I affix my signature.

JOSE MARTINEZ ESTAP. 

